// Low power NeoPixel earrings example.  Makes a nice blinky display
// with just a few LEDs on at any time...uses MUCH less juice than
// rainbow display!

#include <Adafruit_NeoPixel.h>

#define PIN 0

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(32, PIN);

uint8_t  mode   = 0, // Current animation effect
         offset = 0; // Position of spinny eyes
uint32_t color  = 0xffae00; // Start red
uint32_t prevTime;
uint8_t  maxPixels = 2;

const uint32_t mm[] = { 0xff2426, 0xfe3223, 0xfe4121, 0xfd4f1f, 0xfd5e1d, 0xfc6d1b, 0xfc7b18, 0xfb8a16, 0xfb9814, 0xfaa712, 0xfab610, 0xffc20d, 0xffd30b, 0xffe309, 0xfff407, 0xf7ff05 };

void setup() {
  pixels.begin();
  pixels.setBrightness(60); // 1/3 brightness
  prevTime = millis();
}

void loop() {
  uint8_t  i;
  uint32_t t;
  

  switch(mode) {

   case 0: // Random sparks - just one LED on at a time!
    i = random(15);
    color = mm[i];
    pixels.setPixelColor(0, color);
    pixels.setPixelColor(1, color);
    pixels.show();
    i = random(4);
    delay(5 + (i*5));
    pixels.setPixelColor(0, 0);
    pixels.setPixelColor(1, 0);
    pixels.show();
    break;
 
   case 1: // Spinny wheels (8 LEDs on at a time)
    for(i=0; i<maxPixels; i++) {
      uint32_t c = 0;
      if(((offset + i) & 7) < 2) c = color; // 4 pixels on...
      pixels.setPixelColor(   i, c); // First eye
      pixels.setPixelColor(31-i, c); // Second eye (flipped)
    }
    pixels.show();
    offset++;
    delay(20);
    break;
  }

  t = millis();
  if((t - prevTime) > 8000) {      // Every 8 seconds...
    mode++;                        // Next mode
    if(mode > 1) {                 // End of modes?
      mode = 0;                    // Start modes over
      color >>= 8;                 // Next color R->G->B
      if(!color) color = 0xffae00; // Reset to red
    }
    for(i=0; i<32; i++) pixels.setPixelColor(i, 0);
    prevTime = t;
  }
}